I am usind pdfbox and trying to colour the header of the table; I had done the table drawing correctly using tutorial ' http://fahdshariff.blogspot.in/2010/10/creating-tables-with-pdfbox.html'
The code as follows
//draw the rows
float nexty = y ;
for (int i = 0; i <= rows; i++) {
contentStream.drawLine(margin, nexty, margin+tableWidth, nexty);
nexty-= rowHeight;
}
//draw the columns
float nextx = margin;
for (int i = 0; i <= cols; i++) {
contentStream.drawLine(nextx, y, nextx, y-tableHeight);
nextx += (colWidths != null) ? colWidths[i] : colWidth;
}
I got the code for colouring as follows:
contentStream.setNonStrokingColor( Color.RED );
contentStream.fillRect( 10, 10, 100, 100 );
I tried to put it but its not working as needed. I need to colour table header only. How can I achieve that. Please help me.
Related
For context: I am going to analyze the breathing movement of parents during kangaroo mother care and I wish to respect their privacy by not recording them, but only the movement of stickers I placed on their chest and stomach.
So far, I'm able to track 2 colours based on webcam input through the code below. However, I would like to record only the tracked colours instead of the webcam feed as to preserve the privacy of the parent.
Does anybody know how to add a background colour, whilst still being able to track colour?
import processing.video.*;
Capture video;
final int TOLERANCE = 20;
float XRc = 0;// XY coordinate of the center of the first target
float YRc = 0;
float XRh = 0;// XY coordinate of the center of the second target
float YRh = 0;
int ii=0; //Mouse click counter
color trackColor; //The first color is the center of the robot
color trackColor2; //The second color is the head of the robot
void setup() {
size(640,480);
video = new Capture(this,640,480);
video.start();
trackColor = color(255,0,0);
trackColor2 = color(255,0,0);
smooth();
}
void draw() {
background(0);
if (video.available()) {
video.read();
}
video.loadPixels();
image(video,0,0);
float r2 = red(trackColor);
float g2 = green(trackColor);
float b2 = blue(trackColor);
float r3 = red(trackColor2);
float g3 = green(trackColor2);
float b3 = blue(trackColor2);
int somme_x = 0, somme_y = 0;
int compteur = 0;
int somme_x2 = 0, somme_y2 = 0;
int compteur2 = 0;
for(int x = 0; x < video.width; x++) {
for(int y = 0; y < video.height; y++) {
int currentLoc = x + y*video.width;
color currentColor = video.pixels[currentLoc];
float r1 = red(currentColor);
float g1 = green(currentColor);
float b1 = blue(currentColor);
if(dist(r1,g1,b1,r2,g2,b2) < TOLERANCE) {
somme_x += x;
somme_y += y;
compteur++;
}
else if(compteur > 0) {
XRc = somme_x / compteur;
YRc = somme_y / compteur;
}
if(dist(r1,g1,b1,r3,g3,b3) < TOLERANCE) {
somme_x2 += x;
somme_y2 += y;
compteur2++;
}
else if(compteur2 > 0) {
XRh = somme_x2 / compteur2;
YRh = somme_y2 / compteur2;
}
}
}
if(XRc != 0 || YRc != 0) { // Draw a circle at the first target
fill(trackColor);
strokeWeight(0.05);
stroke(0);
ellipse(XRc,YRc,20,20);
}
if(XRh != 0 || YRh != 0) {// Draw a circle at the second target
fill(trackColor2);
strokeWeight(0.05);
stroke(0);
ellipse(XRh,YRh,20,20);
}
}
void mousePressed() {
if (mousePressed && (mouseButton == RIGHT)) { // Save color where the mouse is clicked in trackColor variable
if(ii==0){
if (mouseY>480){mouseY=0;mouseX=0;}
int loc = mouseX + mouseY*video.width;
trackColor = video.pixels[loc];
ii=1;
}
else if(ii==1){
if (mouseY>480){mouseY=0;mouseX=0;}
int loc2 = mouseX + mouseY*video.width;
trackColor2 = video.pixels[loc2];
ii=2;
}
}
}
Try adding the background(0); right before you draw the first circle. It should cover the video and you can draw the circles on top of it.
Regards
Jose
Document document;
document.NewPage();
System.Collections.ArrayList columnWidth = new System.Collections.ArrayList();
for (int i = 0; i < this.dataTable.Columns.Count; i++)
{
if (i < 2)
{
columnWidth.Add(2f);
}
else
{
columnWidth.Add(1f);
}
}
float[] headerWidths = columnWidth.OfType<float>().Select(w => (float)w).ToArray();
PdfPTable tableHeader = new PdfPTable(3);
tableHeader.AddCell(GetCell(Col1Name));
tableHeader.AddCell(GetCell(Col2Name));
tableHeader.AddCell(GetCell(DescriptionColumnName));
tableHeader.SetWidths(headerWidths);
tableHeader.HeaderRows = 1;
PopulatePDFCell(tableHeader);
document.Add(tableHeader);
How can i set varying column widths for each column individually? The DescriptionColumnName width is expected to be much wider and Col1Name is not expected to be equal to Col2Name in width?
So I'm writing up a processing sketch to test a randomized terrain generator for a scorched earth clone I'm working on. It seems to work as intended but with one minor problem. In the code I generate 800 1 pixel wide rectangles and set the fill to brown beforehand. The combination of the rectangles should be a solid mass with a brown dirt-like color (77,0,0).
However, the combination shows up as black regardless of the rgb fill value set. I think it might have something to do with each rectangle's border being black? Does anyone know what is happening here offhand?
final int w = 800;
final int h = 480;
void setup() {
size(w, h);
fill(0,128,255);
rect(0,0,w,h);
int t[] = terrain(w,h);
fill(77,0,0);
for(int i=0; i < w; i++){
rect(i, h, 1, -1*t[i]);
}
}
void draw() {
}
int[] terrain(int w, int h){
width = w;
height = h;
//min and max bracket the freq's of the sin/cos series
//The higher the max the hillier the environment
int min = 1, max = 6;
//allocating horizon for screen width
int[] horizon = new int[width];
double[] skyline = new double[width];
//ratio of amplitude of screen height to landscape variation
double r = (int) 2.0/5.0;
//number of terms to be used in sine/cosine series
int n = 4;
int[] f = new int[n*2];
//calculating omegas for sine series
for(int i = 0; i < n*2 ; i ++){
f[i] = (int) random(max - min + 1) + min;
}
//amp is the amplitude of the series
int amp = (int) (r*height);
for(int i = 0 ; i < width; i ++){
skyline[i] = 0;
for(int j = 0; j < n; j++){
skyline[i] += ( sin( (f[j]*PI*i/height) ) + cos(f[j+n]*PI*i/height) );
}
skyline[i] *= amp/(n*2);
skyline[i] += (height/2);
skyline[i] = (int)skyline[i];
horizon[i] = (int)skyline[i];
}
return horizon;
}
I think it might have something to do with each rectangle's border being black?
I believe this is the case. In your setup() function, I added the noStroke() function before you draw the rectangles. This removes the black outline to the rectangles. Since each rectangle is only 1 pixel wide, having this black stroke (which is on by default) makes the color of each rectangle black, no matter what color you try to choose before.
Here is an updated setup() function - I now see a reddish brown terrain:
void setup() {
size(w, h);
fill(0, 128, 255);
rect(0, 0, w, h);
int t[] = terrain(w, h);
fill(77, 0, 0);
noStroke(); // here
for (int i=0; i < w; i++) {
rect(i, h, 1, -1*t[i]);
}
}
hello what I'm currently dealing with is the ability to get input from a text file and then convert it into a bitmap and save it to a file.
the input looks like this:
########
# #
########
and I want to draw it using allegro and instead of # there would be pixels of specified size. Each # should represent a tile (10x10 pixel). So the final result would look like this
link to an image
I've actually drawn it using this code:
for (int i = 0; i < 80; i++){
for (int j = 0; j < 10; j++){
al_draw_pixel(i, j, al_map_rgb(0, 0, 0));
}
}
for (int i = 0; i < 10; i++){
for (int j = 10; j < 20; j++){
al_draw_pixel(i, j, al_map_rgb(0, 0, 0));
}
}
for (int i = 70; i < 80; i++){
for (int j = 10; j < 20; j++){
al_draw_pixel(i, j, al_map_rgb(0, 0, 0));
}
}
for (int i = 0; i < 80; i++){
for (int j = 20; j < 30; j++){
al_draw_pixel(i, j, al_map_rgb(0, 0, 0));
}
}
yeah that's pretty bad, so how do I achieve something like that but with a common procedure which would be independent on the text file? thanks for any advice.
note: the only allowed headers are allegro5/allegro.h and allegro5/allegro_image.h
To draw to an image with Allegro 5, you need to do something like:
ALLEGRO_BITMAP *bmp = al_create_bitmap(640, 480);
al_set_target_bitmap(bmp);
Now all of your drawing operations will happen on the image. To later save it:
al_save_bitmap("somefile.bmp", bmp);
You can also use png and jpg as extensions if your image library has support for it enabled.
Use these functions to read the text file:
al_fopen
al_fgetc
al_feof
al_fclose
Set int x and y to zero. You'll be looping over until the end of the file. On every iteration increment x by one. If you reach a new line character (\n) increment y by one and set x to zero. (You should ignore \r characters.)
Now, depending on the character read, draw a tile:
ALLEGRO_BITAMP *tile_to_draw = NULL;
if (c == '#')
tile_to_draw = bmp1;
else if (c == ' ')
tile_to_draw = bmp2;
if (tile_to_draw)
al_draw_bitmap(tile_to_draw, x * 10, y * 10, 0);
Of course there's better ways to map characters to tiles than a series of ifs, but the above works and should be enough to help you finish your homework.
I'm writing a Conway's life game for school. In the program I am having trouble with the arrays taking the values I am assigning them. At one point in the program they print out the value assigned to them (1) yet at the end of the program when I need to print the array to show the iterations of the game it shows an incredibly low number. The other trouble was I was encountering difficulties when putting in a loop that would ask if it wants you to run another iteration. So I removed it until the previous errors were fixed.
Im writing this with C++
#include <stdio.h>
int main (void)
{
int currentarray [12][12];
int futurearray [12][12];
char c;
char check = 'y';
int neighbors = 0;
int x = 0; // row
int y = 0; //column
printf("Birth an organism will be born in each empty location that has exactly three neighbors.\n");
printf("Death an organism with four or more organisms as neighbors will die from overcrowding.\n");
printf("An organism with fewer than two neighbors will die from loneliness.\n");
printf("Survival an organism with two or three neighbors will survive to the next generation.\n");
printf( "To create life input x, y coordinates.\n");
while ( check == 'y' )
{
printf("Enter x coordinate.\n");
scanf("%d", &x ); while((c = getchar()) != '\n' && c != EOF);
printf("Enter y coordinate.\n");
scanf("%d", &y ); while((c = getchar()) != '\n' && c != EOF);
currentarray [x][y] = 1;
printf ("%d\n", currentarray[x][y]);
printf( "Do you wish to enter more input? y/n.\n");
scanf("%c", &check); while((c = getchar()) != '\n' && c != EOF);
}
// Note - Need to add a printf statement showing the array before changes are made after input added.
// check for neighbors
while(check == 'y')
{
for(y = 0; y <= 12; y++)
{
for(x = 0; x <= 12; x++)
{
//Begin counting number of neighbors:
if(currentarray[x-1][y-1] == 1) neighbors += 1;
if(currentarray[x-1][y] == 1) neighbors += 1;
if(currentarray[x-1][y+1] == 1) neighbors += 1;
if(currentarray[x][y-1] == 1) neighbors += 1;
if(currentarray[x][y+1] == 1) neighbors += 1;
if(currentarray[x+1][y-1] == 1) neighbors += 1;
if(currentarray[x+1][y] == 1) neighbors += 1;
if(currentarray[x+1][y+1] == 1) neighbors += 1;
//Apply rules to the cell:
if(currentarray[x][y] == 1 && neighbors < 2)
futurearray[x][y] = 0;
else if(currentarray[x][y] == 1 && neighbors > 3)
futurearray[x][y] = 0;
else if(currentarray[x][y] == 1 && (neighbors == 2 || neighbors == 3))
futurearray[x][y] = 1;
else if(currentarray[x][y] == 0 && neighbors == 3)
futurearray[x][y] = 1;
}
}
}
// Set the current array to the future and change the future to 0
{
for(y = 0; y < 12; y++)
{
for(x = 0; x < 12; x++)
{
//Begin the process
currentarray [x][y] = futurearray [x][y];
futurearray [x][y] = 0;
}
}
}
{
for(y = 0; y < 12; y++)
{
for(x = 0; x < 12; x++)
{
//print the current life board
printf("%d ", currentarray[x][y]);
}
}
}
// Have gone through one iteration of Life
//Ask to do another iteration
printf("Do you wish to continue y/n?\n");
scanf("%c", &check); while((c = getchar()) != '\n' && c != EOF);
return 0;
}
You are defining your arrays as [12][12].
In your generation loop you walk from i = 0 to i <= 12, which is 13 steps instead of the 12 of the array. Additionally you are trying to access x-1 and y-1, which can be as low as -1. Again not inside your array.
Sometimes you get semi-useful values from within your array, but on some borders you are just accessing random data.
Try to correct your border.
You forgot to set neighbors to 0 before counting them.
Since this is C++ (not C), you might as well declare neighbors inside the loop body. Makes these kinds of issues easier to spot, too.
Also, is it me, or is that while loop never going to finish? Your braces are a mess, in general, as is your indentation. You could do yourself and us a favour by cleaning those up.
Obviously agree with all the above suggestions. One nice trick you might want to implement with Life is to create an extra border around your area. So if the user wants a 12x12 grid (and you should allow width/height to be specified and allocate memory dynamically) internally you hold a 14x14 grid corresponding to a border around the actual grid. Before running the calculation copy the top row to the bottom border, bottom row to the top border etc. Now you can run the main algorithm on the inner 12x12 grid without worrying about edge cases. This will enable your patterns to re-appear on the other side if they fall off the edge.
You're also forgetting to set the values of both arrays to zero. This will take care of the ridiculous number issue you're having. you can do that by copying this for loop:
for(y = 0; y < 12; y++)
{
for(x = 0; x < 12; x++)
{
//Begin the process
currentarray [x][y] = futurearray [x][y];
futurearray [x][y] = 0;
}
}
and pasting it before the while loop but instead of setting currentarray[x][y] = futurearray[x][y], set it to 0. Also, if the coordinates are viewable locations instead of array co-ordinates, you'll want to change this:
printf ("%d\n", currentarray[x][y]);
to this:
printf ("%d\n", currentarray[x-1][y-1]);
I would also recommend putting a printf with a newline (\n) after each row has been printed and a tab (\t) after each item so that the formatting looks cleaner.